stock gear ratio
#1
stock gear ratio
I tried searching, maybe I just haven't come to the right thread yet but I am trying to find out the stock 3.0 v6 sr5 thirds gear ratio for a 91 truck.
Anyone willing to help with quickie would be greatly appreciated. Thanks!
Anyone willing to help with quickie would be greatly appreciated. Thanks!
#2
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what was factory tire size? or you can jack it up and spin the wheel and count the drive shaft rotations...
Last edited by bain; 09-24-2009 at 01:48 PM.
#3
well you could take apart the trans count the gear teeth on the gears on the counter shaft and main shaft and do your math.................... but thats too much work..... i'm not sure off the top of my head.... i know overall raito is 4:10 i believe.
#5
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I dont know about you guys but im not going to sit under my truck and count rotations.
http://www.brian894x4.com/Gearratiosanddiffs.html scroll down and read lol.
http://www.brian894x4.com/Gearratiosanddiffs.html scroll down and read lol.
#7
I dont know about you guys but im not going to sit under my truck and count rotations.
http://www.brian894x4.com/Gearratiosanddiffs.html scroll down and read lol.
http://www.brian894x4.com/Gearratiosanddiffs.html scroll down and read lol.
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#10
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gear code on door .should read something like at/mg292 for example. with the g indication being the diff size ex.8 in.the 29 being the ratio such as 4.10 and the 2 standing for 2 pinion diff
#11
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some truck were sent out of the factory with 4.30 gears for the v6 manual set up
#14
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the only way to be positive is to pull the differential and count. But really you can figure it out, and be pretty confident. Take truck for a drive and watch tach and speedo when you are in 4th gear manual, 3rd for auto at 55 MPH and get you tire size and check out this chart. http://jeephorizons.com/tech/rpmchart.html
#15
pull the rear drive shaft off the rear 3rd member, and look at the color of the paint on the pinyon. quick and easy
Code:
Ratio Ring/Pinion Color Crawl:Ratio
3.42 ...42/12... Purple ...31:1
3.90 ...39/10... Red... ...36:1
4.10 ...41/10... Pink.. ...37:1
4.11 ...37/09... Orange ...37:1
4.30 ...43/10... Blue.. ...39:1
4.37 ...35/08... Green. ...40:1
4.56 ...41/09... Yellow ...41:1
4.88 ...39/08... White. ...44:1
5.29 ...37/07... None.. ...48:1
5.71 ...40/07... None.. ...51:1
Code:
Ratio Ring/Pinion Color Crawl:Ratio
3.42 ...42/12... Purple ...31:1
3.90 ...39/10... Red... ...36:1
4.10 ...41/10... Pink.. ...37:1
4.11 ...37/09... Orange ...37:1
4.30 ...43/10... Blue.. ...39:1
4.37 ...35/08... Green. ...40:1
4.56 ...41/09... Yellow ...41:1
4.88 ...39/08... White. ...44:1
5.29 ...37/07... None.. ...48:1
5.71 ...40/07... None.. ...51:1
#16
My old man wasn't the original owner, he bought it over a decade now. I don't think he's changed anything because he's not the type. I don't know if the previous owner did though. Looks stock and has been that way ever since my old man bought it. It is an Automatic, running on 31s with tow package.
I will try some of the above mention. Thanks again everyone : )
I will try some of the above mention. Thanks again everyone : )
Last edited by Oldmans4x4; 09-24-2009 at 09:46 PM.
#18
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you dont have to pull the third member out just to check the ratio DC????
you can do the "rotate tire and count DS rotations" method right??????
hell thats how i find the 4.56 and 4.88 diffs at the junkyards in Toyota's...
if its auto and was on 31's from the factory then it most likely has 4.56's
you can do the "rotate tire and count DS rotations" method right??????
hell thats how i find the 4.56 and 4.88 diffs at the junkyards in Toyota's...
if its auto and was on 31's from the factory then it most likely has 4.56's
#20
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I don't know the rest, get off yer lazy rear and check yourself.
My 91 came with 4.56's. I did the spin tire method to find that out, since my cab is from a 90 p/u with a 22re...